Wow. Thanks for this bug report. I have code that checks for these things but apparently the probes for arabidopsis have slipped past my current dragnet for missing fields.
I will find out what went wrong and fix the package. And then I will update the dragnet so this kind of problem doesn't happen again. Once I have repaired the package I will let you know. But until I report back to this thread you won't be able to get much used out of the following two packages:
ag.db_3.1.2.tar.gz
ath1121501.db_3.1.2.tar.gz
The complementary arabidopsis OrgDb package (org.At.tair.db_3.1.2.tar.gz), is unaffected as the only problem seems to be the affy based probe data.
OK. I have just pushed repaired packages online for these two chip packages. Look for version 3.1.4 to appear within the next day or so on the website.
I can confirm that this package is completely busted:
Thanks James.
I review ath1121501.db schema and AnnotationDbi spec.